So I just de-soldered the leads to the fan on my Budda SD45 head (runs KT66s) because the fan was driving me nuts. It's completely reversable, but I was thinking about installing a simple switch in case I ever wanted to turn the fan on. But at this point I can't see the need, I have a bunch of amps that run way hotter than this amp and they don't have a fan built in. I also unplug the fan to my Mesa Mark III Head and it's quiet as a mouse. So what gives? Do you guys run the fan or not?